Air booster output depends on both inlet and outlet pressure. Request delivered capacity at your minimum inlet pressure, temperature and flow rather than comparing advertised final pressure ratings. Verify the proposed configuration serves peak draws and sustained duty under actual factory conditions.
Shown as a configuration reference. Availability and the equipment offered for your project are confirmed separately.
Provide the lowest normal inlet condition
A high pressure air booster compresses air that is already pressurized. Its delivered output depends on inlet pressure as well as required discharge pressure. A booster rated for a given final pressure does not guarantee useful flow when inlet supply drops during concurrent production activity. Request model-specific output at your minimum expected inlet pressure, inlet temperature and available upstream flow rather than comparing maximum outlet ratings.
The Atlas Copco LTB series is designed to handle suction pressures between 4 and 11 bar depending on the model [S1]. If your plant network operates at lower pressure during other process cycles, state that condition explicitly. Ask each bidder for delivered capacity at the lowest inlet case and confirm whether additional upstream compressor capacity or pressure adjustment is required.
Separate brief peaks from sustained consumption
Identify the high-pressure user’s largest single draw and its recovery interval separately from continuous background demand. A booster serving intermittent bottle-testing draws operates differently from one supporting sustained laser-cutting purge flow. Provide peak flow magnitude, duration and the time available for the receiver to recover before the next event. Ask how the proposed receiver volume and pressure control band serve both event types.
Do not assume advertised motor power alone establishes sufficient air delivery for your duty cycle. Request a pressure versus time trace for a representative sequence that includes your largest draw at minimum inlet pressure. The proposal should explain whether the high-pressure receiver, booster capacity and upstream supply together maintain acceptable pressure at the user connection throughout the cycle.
Account for compression ratio and cooling duty
Compression work and heat rejection increase as the ratio between discharge and suction pressure rises. A booster operating at minimum inlet pressure works harder to reach the same final pressure than one supplied with higher inlet conditions. Confirm that the proposed motor, cooling arrangement and service intervals remain valid at your stated minimum inlet case rather than at a higher nominal supply pressure.
Provide inlet air temperature and ask for discharge temperature after each stage and after final cooling. If moisture behavior or contamination becomes critical at the high-pressure user, specify air quality requirements and confirm whether additional treatment is needed after compression. Atlas Copco LTB boosters include an integrated internal water separator to prevent condensation from entering the next compression stage [S1]. Ask whether that feature alone meets your application requirement or whether further downstream treatment is necessary.
Buyer input worksheet
| Buyer input | Required detail | Evidence to request |
|---|---|---|
| High-pressure demand | Peak draw size, duration, recovery interval; sustained flow if applicable | Model output at stated inlet and outlet pressure; pressure trace during representative cycle |
| Minimum inlet condition | Lowest normal inlet pressure, temperature, available flow during concurrent production | Delivered capacity and compression duty at minimum inlet case; cooling and motor confirmation |
| Upstream supply | Compressor type, treatment, distribution pressure and simultaneous air users | Inlet flow adequacy; interlock behavior if supply drops below booster minimum |
| Air quality | Moisture, particulate and contamination limits at high-pressure user | Treatment scope before and after compression; responsibility for downstream air quality |
| Package boundary | Compression stages, cooling, receiver, regulation, filtration and protective devices included | Pressure-boundary diagram; itemized scope; exclusions and interface responsibilities |
Define the upstream supply explicitly
A booster is not an independent air source. Its inlet depends on an upstream compressor, treatment train and distribution network. State which compressors supply the booster inlet, their operating pressure band and whether other production equipment draws from the same network simultaneously. If plant pressure sags during peak general demand, include that event in the booster evaluation.
Ask how the proposed booster responds when inlet pressure falls below its minimum rated suction value. Confirm whether automatic interlocks stop the machine, issue an alarm or allow continued operation at reduced output. Avoid setting a plant-wide pressure increase merely to satisfy an unexamined booster selection assumption. Compare the complete system cost including any upstream compressor or receiver changes required to maintain adequate inlet conditions.
Confirm acceptance conditions before purchase
Use a representative operating sequence with the largest normal draw and the minimum expected inlet condition. Measure pressure where the high-pressure user operates and observe recovery, temperature behavior and booster cycling. Record which upstream compressors and other air users were operating during the test. Retain the proposed receiver size and pressure control settings with the report.
A system that reaches final pressure without flow has not demonstrated that it can support the required production duty. The acceptance trial should include realistic draws, measure delivered flow and pressure at the user connection point and confirm that recovery time meets production requirements. If inlet conditions or storage volume change before delivery, require the bidder to explain whether the earlier demonstration remains applicable.
Compare alternatives against the same application data
Rejection conditions include: insufficient output at minimum inlet pressure to serve peak or sustained demand; inlet pressure requirement higher than upstream supply without justified compressor or receiver changes; inadequate high-pressure receiver recovery time between draws; unresolved cooling, drainage or air-quality responsibility; package exclusions that transfer critical design work to the buyer without agreement.
Provide identical demand, inlet and quality information to each bidder. Request model-specific output curves, compression-stage details, cooling capacity and receiver sizing rationale. Compare documented package boundaries rather than assuming enclosed cabinets include every storage, regulation or treatment component. Discuss your application with IndustryApex engineers and request a configuration proposal with stated assumptions, exclusions and acceptance evidence for the specific inlet and demand conditions.
Define your equipment requirements
Review the High pressure air booster buying guide for the complete equipment scope.
Discuss this equipment project ↗ · OEM requirements · ODM requirements. Configuration and feasibility are reviewed for your application.
Explore the High pressure air booster buying guide and RFQ checklist ↗
Frequently asked questions
Why does minimum inlet pressure affect booster selection?
Booster output and compression duty depend on inlet conditions as well as discharge pressure. Request delivered capacity at your lowest normal inlet pressure and temperature rather than comparing advertised maximum ratings. A booster that performs adequately at higher inlet pressure may not serve peak demand when plant pressure drops during concurrent production.
What demand details should I provide?
Identify peak draw size, duration and recovery interval separately from sustained background flow. Provide the largest single event and the time available before the next draw. Ask for a pressure trace showing receiver recovery during a representative cycle at minimum inlet conditions.
What if my plant pressure varies during production?
State the lowest inlet pressure that occurs during concurrent equipment operation. Ask how the proposed booster responds when supply drops below its minimum rated suction value and confirm whether interlocks, alarms or output reduction apply. Compare complete system cost including any upstream compressor or receiver changes needed to maintain adequate inlet conditions.
What should a booster acceptance test include?
Use a representative sequence with your largest draw at minimum inlet pressure. Measure pressure at the high-pressure user connection and observe recovery, temperature and cycling. Record which upstream compressors and air users were operating. A system reaching final pressure without flow has not demonstrated it can support required production duty.
What are common booster package exclusions?
Confirm whether compression stages, cooling, high-pressure receiver, outlet regulation, filtration and protective devices are included. Request a pressure-boundary diagram and itemized scope. Compare documented boundaries rather than assuming an enclosed cabinet includes every storage or treatment component. Clarify installation, piping and air-quality responsibilities before purchase.
Reference information
- LTB 300 – High pressure meets superior quality - Atlas Copco Singapore
Reference data and images explain equipment configurations. IndustryApex engineers confirm the offered model, specification and commercial scope in your project quotation.